package com.duan.controller;

import com.duan.domain.MiaoshaUser;
import com.duan.redis.GoodsKey;
import com.duan.redis.RedisService;
import com.duan.result.Result;
import com.duan.service.GoodsService;
import com.duan.service.MiaoshaUserService;
import com.duan.vo.GoodsDetailVo;
import com.duan.vo.GoodsVo;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.thymeleaf.context.WebContext;
import org.thymeleaf.spring5.view.ThymeleafViewResolver;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Controller
@RequestMapping("/goods")
public class GoodsController {

    private static Logger logger = LoggerFactory.getLogger(GoodsController.class);

    @Autowired
    MiaoshaUserService miaoshaUserService;

    @Autowired
    RedisService redisService;

    @Autowired
    GoodsService goodsService;

    @Autowired
    ThymeleafViewResolver thymeleafViewResolver;

    //未交给自定义方法参数解析器解决权限的书写（废弃）
//    @RequestMapping("/to_list")
//    public String list(HttpServletResponse response, Model model,
//                       @CookieValue(value = MiaoshaUserService.COOKIE_NAME_TOKEN, required = false)String cookieToken,
//                       @RequestParam(value = MiaoshaUserService.COOKIE_NAME_TOKEN, required = false)String paramToken){
//        if(StringUtils.isEmpty(cookieToken) && StringUtils.isEmpty(paramToken)){
//            return "login";
//        }
//        String token = StringUtils.isEmpty(paramToken) ? cookieToken : paramToken;
//        MiaoshaUser user = miaoshaUserService.getByToken(response, token);
//        model.addAttribute("user", user);
//
//        return "goods_list";
//    }

    @RequestMapping(value="/to_list", produces = "text/html")
    @ResponseBody
    public String list(HttpServletRequest request, HttpServletResponse response, Model model, MiaoshaUser user){
        model.addAttribute("user", user);
        //取缓存
        String html = redisService.get(GoodsKey.getGoodsList, "", String.class);
        if(!StringUtils.isEmpty(html)){
            return html;
        }

        //查询商品列表
        List<GoodsVo> goodsList = goodsService.listGoodsVo();
        model.addAttribute("goodsList", goodsList);
//        return "goods_list";

        WebContext ctx = new WebContext(request, response, request.getServletContext(), request.getLocale(), model.asMap());
        //手动渲染
        html = thymeleafViewResolver.getTemplateEngine().process("goods_list", ctx);
        if(!StringUtils.isEmpty(html)){
            redisService.set(GoodsKey.getGoodsList, "" , html);
        }

        return html;

    }

    @RequestMapping(value = "/to_detail/{goodsId}", produces = "text/html")
    @ResponseBody
    public String detail2(HttpServletRequest request, HttpServletResponse response, Model model, MiaoshaUser user, @PathVariable("goodsId")long goodsId){
        model.addAttribute("user", user);

        //取缓存
        String html = redisService.get(GoodsKey.getGoodsDetail, ""+goodsId, String.class);
        if(!StringUtils.isEmpty(html)) {
            return html;
        }

        //手动渲染
        GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);
        model.addAttribute("goods", goods);

        long startAt = goods.getStartDate().getTime();
        long endAt = goods.getEndDate().getTime();
        long now = System.currentTimeMillis();

        int miaoshaStatus = 0;
        int remainSeconds = 0; // 还剩多少秒开始

        if(now < startAt){ // 秒杀还没开始，倒计时
            miaoshaStatus = 0;
            remainSeconds = (int)(startAt - now) / 1000;
        }else if(now > endAt){ // 秒杀已经结束
            miaoshaStatus = 2;
            remainSeconds = -1;
        }else { // 秒杀进行中
            miaoshaStatus = 1;
            remainSeconds = 0;
        }

        model.addAttribute("miaoshaStatus", miaoshaStatus);
        model.addAttribute("remainSeconds", remainSeconds);

//        return "goods_detail";
        WebContext ctx = new WebContext(request,response,
                request.getServletContext(),request.getLocale(), model.asMap());
        html = thymeleafViewResolver.getTemplateEngine().process("goods_detail", ctx);
        if(!StringUtils.isEmpty(html)) {
            redisService.set(GoodsKey.getGoodsDetail, ""+goodsId, html);
        }
        return html;
    }

    @RequestMapping("/detail/{goodsId}")
    @ResponseBody
    public Result<GoodsDetailVo> detail(HttpServletRequest request, HttpServletResponse response, Model model, MiaoshaUser user, @PathVariable("goodsId")long goodsId){

        GoodsVo goods = goodsService.getGoodsVoByGoodsId(goodsId);

        long startAt = goods.getStartDate().getTime();
        long endAt = goods.getEndDate().getTime();
        long now = System.currentTimeMillis();

        int miaoshaStatus = 0;
        int remainSeconds = 0; // 还剩多少秒开始

        if(now < startAt){ // 秒杀还没开始，倒计时
            miaoshaStatus = 0;
            remainSeconds = (int)(startAt - now) / 1000;
        }else if(now > endAt){ // 秒杀已经结束
            miaoshaStatus = 2;
            remainSeconds = -1;
        }else { // 秒杀进行中
            miaoshaStatus = 1;
            remainSeconds = 0;
        }

        GoodsDetailVo vo = new GoodsDetailVo();
        vo.setGoods(goods);
        vo.setMiaoshaUser(user);
        vo.setRemainSeconds(remainSeconds);
        vo.setMiaoshaStatus(miaoshaStatus);

        return Result.success(vo);
    }

}
